R. Kelly’s “Pregnant” is delightfully light on metaphors: it’s about wanting to get a lady pregnant via the sex. It’s like Kelly has run out of clever ways to say it, so he’s done dancing around the subject. Tyrese, Robin Thicke and The-Dream help Kells out on verses, all of them dropping hilarious lines about putting you in their movies (Tyrese), magic seeds (Robin Thicke) and putting birth control pills on chill (The-Dream) and still getting it after conception (The-Dream, again).